The Casella CEL-240 is a completely new design of sound level meter featuring the power of Digital Signal Processing (DSP) technology and the simplicity and low cost of a traditional analog instrument. It can be used for a wide range of noise measurement tasks and is suitable for many everyday tasks. Complying with all the ANSI and IEC accuracy specifications in the Type 2 category, the Casella CEL-240 will appeal to new ans experienced users alike.